Improvement in the manufacture of roofing-felt



repellent of water;

siiMUEL KINGADLOFINEW 'YQR NQY ADMINISTRATOR or'rnn nsrnrn OF JAMESANDERSON, DECEASED.

- Letters Patent N 103,199, dated May 17, 1870.

MOM-

The schedulei efen'ed to in these Letters Patent and making part of the same To all whom it may concern:

, Be itjlmown that-Jules Asonnsox, deceased, late w-eiof Ballymacarrett, in the county of Down, in Ireland, did during his lifetime invent certain Improvements in the Manufacture of Felts; and I, SA UEL Kn:- GAN, of city, county, and State of New York, administrutorof the estate of the said J AM'ES Asmmsox, do hereby declare that the following is a full, clear, and exact description thereoli;- .-;'lhis invention relates to felt fabrics for roofing and analngous purposes and consists in a process of preparing sheets of felt, whereby its fibers will be caused to cohere firmly, while moisture will be entirely excluded.

Asphaltum is first purified by boiling, or in any other suit-able manner, and then intermixed with the melted product or hot fluid thus obtained, twenty to twentyfive per cent. of-oil or tar. 1 i r v "The objcctof this is to lessen the stili'ness and "consistency, while it assists in he composition thus formed istheu applied to 'fibrous material used in felting at the time or just before the felting operation takes place.

{The sheet then consists of a' felt body, purified asphaltum, andioil, thoroughly intermixed throughout the mass. It is of uniform quality in every v;, ,,,p2 n't, and can be relied on for its perfect adaptation to the purpose in view, and for its great durability.

producing a perfect 1. The process above described for forming roofing sheets, which consists in saturating fibrous material with a mixture of purified asphaltum a i I A, or tar, at or immediately before the felting 0p n.

2. Sheets for roofing or similar purp Formed of a felt body, whose fibers are held firmly together and rendered impervious to moisture by means of a mixture of oil and purified alphaltum.

The above specification ofthe invention ct JAMES ANDERSON, deceased, signed by me this 'ihthday oi February, 1870.

- SAMUEL" Kliiiil AN, Administrator of estate of James Anderson,

deceased.

Witnesses Geo. W. MABEE, ALEX. I Rioisnu'rs.- 

